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Item Effects of mycorrhizae as a substitute for inorganic fertilizer on growth and yield of tomato (lycopersicon esculentum l.) And soybean (glycine max l.), and soil microbial activity(Faculty of Agriculture, University of Ruhuna:Kamburupitiya, 2013) Alawathugoda, C.J.; Dahanayake, N.Item Site specific nutrient management in soils of Sri Lanka. a review of recent work using a systematic approach to formulate fertilizer recommendations for annual crops(Soil Science Society of Sri Lanka:Peradeniya, 2010) Kumaragamage, D.Item Control of Parthenium hysterophorus L. and its impact on yield performance of Tomato (solanum lycopersicum L.) in the Nothern province of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2013) Nishanthan, K.; Sivachandiran, S.; Marambe, B.